<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/><title></title></head><body><p style="margin: 0px;"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:#000000;text-decoration:none">Hi Kees,<br /></span></p>
<p style="margin: 0px;"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:#000000;text-decoration:none">You cannot compare your Jensen Healey cooling system with the one from an Austin-Healey. The design of the water pumps on the Austin-Healey allows you 4 (AH100) or 7psi (AH 6cylinders) . Opening of thermostat is 74° C or 82°C, which make a small difference in hot temperatures in Summer. The Austin-Healey engines tend to heat up very much in hill up driving. You really can see the needle going up to over 95° C, but when going down or even surface it cools down to opening temperature of the thermostat. With the 74° you have a better buffer/distance to the boiling point for the next hill up or traffic light to traffic light in cities.</span></p>
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<p style="margin: 0px;"><span style="font-family:arial,helvetica,sans-serif;font-size:10pt;color:#000000;text-decoration:none">Josef Eckert</span></p>
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<p style="margin: 0px;">Betreff: Re: AW: [Healeys] alum radiator swap</p>
<p style="margin: 0px;">Datum: 2019-06-02T12:19:27+0200</p>
<p style="margin: 0px;">Von: "Kees Oudesluijs" <coudesluijs@chello.nl></p>
<p style="margin: 0px;">An: "josef-eckert@t-online.de" <josef-eckert@t-online.de>, "Healey, Forum" <healeys@autox.team.net></p>
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<p style="margin: 0px;">Hi Josef,</p>
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<p style="margin: 0px;">I agree fully with you that the running gear should be kept in perfect condition to avoid problems. Not always the case in the US where maintenance has a different meaning than in Europe. Cooling problems can arise from a lean mixture or wrong ignition timing to silted up engines and radiators due to lack of use of proper coolant. I have seen horribly silted up engines and radiators from the US and UK incl. in my own Californian car.</p>
<p style="margin: 0px;">If I am correct the thermostat opening temperature on the A-H´s is either 72°C or 76°C (US spec) which is more or less average. You could easily go up to 86°C with a 10psi radiator cap and proper hoses, preferably reinforced PU. A good high efficiency radiator core should not hinder coolant flow and it even would offer less resistance to flow. However there will generally be a slight increase in airflow resistance. Some inferior designs may hinder the airflow through the core considerably. Go to a proper radiator expert restorer and do not always trust the guy around the corner offering a cheap service. He may be an expert in soldering but does not always understand the workings of a cooling system.</p>
<p style="margin: 0px;">I am afraid I am in no position in the Netherlands to avoid heavy traffic, even in relaxed classic car events, so I stick with an improved radiator core, 86°C opening thermostat and a properly set up thermostatically controlled fan (98°C in, 92°C out), fixed fan removed. Only let me down once when the fuse blew in the middle of a hold up during an event. </p>
<p style="margin: 0px;">I also use my car a fair bit except when there is salt on the roads.</p>
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<p style="margin: 0px;">Kees Oudesluijs</p>
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<div class="moz-cite-prefix">Op 2-6-2019 om 11:25 schreef <a class="moz-txt-link-abbreviated" href="mailto:josef-eckert@t-online.de">josef-eckert@t-online.de</a>:</div>
<blockquote cite="mid:1559467523509.3064804.bb11712f803c915f64bc04e6f31d8a53f8d83072@spica.telekom.de">
<p style="margin: 0px;"><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000; text-decoration: none;">Kees,<br /></span></p>
<p style="margin: 0px;"><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000; text-decoration: none;">The running temperature of an Austin-Healey 100, 100/6 and 3000 engine is already relatively high. There is no need to increase it. But you need to have engine and radiator in as good as closely to new condition. That means no crude in the water channels of the engine or radiator. Some high effeciancy core radiators are also counterproductive, as they hinder the flush of the water through the radiator.</span></p>
<p style="margin: 0px;"><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000; text-decoration: none;">My experiance of 40 years with Austin-Healeys and others like MG As, Triumph TR2-3as, etc. are to kkeep everything to factory spec and the car runs absolutely fine in normal traffic. Personally I avoid motorways with high traffic and always congestions and driving through big cities like Cologne, Munich, Stuttgart, Amsterdam, etc. from traffic light to traffic light. But those big cities I even avoid to go in with my modern car as its a nightmare meanwhile.</span></p>
<p style="margin: 0px;"><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000; text-decoration: none;">I better use public transport for going in when I need to go.</span></p>
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<p style="margin: 0px;"><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000; text-decoration: none;">Josef Eckert</span></p>
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<p style="margin: 0px;">-----Original-Nachricht-----</p>
<p style="margin: 0px;">Betreff: Re: [Healeys] alum radiator swap</p>
<p style="margin: 0px;">Datum: 2019-06-02T10:21:09+0200</p>
<p style="margin: 0px;">Von: "Kees Oudesluijs" <a class="moz-txt-link-rfc2396E" href="mailto:coudesluijs@chello.nl"><coudesluijs@chello.nl></a></p>
<p style="margin: 0px;">An: <a class="moz-txt-link-rfc2396E" href="mailto:healeys@autox.team.net">"healeys@autox.team.net"</a> <a class="moz-txt-link-rfc2396E" href="mailto:healeys@autox.team.net"><healeys@autox.team.net></a></p>
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<p style="margin: 0px;">Yes and no.</p>
<p style="margin: 0px;">An old car should be fit for any normal drive, be it regularly or occasionally, at leisure or in modern heavy traffic. This means that many classic cars will need some assistance with the cooling, i.e. an electric fan, either manually or thermostatically controlled.</p>
<p style="margin: 0px;">An aluminium radiator is indeed a gimmick and does not add anything at all. It will probably wear out faster due to corrosion. It is just cheap to manufacture and does not improve the cooling efficiency.</p>
<p style="margin: 0px;">What improves cooling efficiency is increasing the running temperature of the engine by fitting a hotter thermostat thus creating a larger delta T, fitting a more efficient water pump to increase the coolant flow, enlarging the total surface area of the radiator, i.e. more rows (up to a point), larger matrix or increase the air flow through the radiator, i.e. improved cowling, more blades to the fixed fan, higher engine idling speed but most of all a thermostatically controlled fan in combination with a carefully chosen thermostat and thermoswitch.</p>
<p style="margin: 0px;">Kees Oudesluijs</p>
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<div class="moz-cite-prefix">Op 2-6-2019 om 08:53 schreef <a class="moz-txt-link-abbreviated" href="mailto:josef-eckert@t-online.de">josef-eckert@t-online.de</a>:</div>
<blockquote cite="mid:1559458431443.3042984.5d09105e3a9936237334f95f61d63668af6b1c5d@spica.telekom.de">
<p style="margin: 0px;"><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000; text-decoration: none;">When you use genuine parts to replace faulty ones and when you keep the car propperly maintained and when you use the old car only occasionally for fun drives just to enjoy driving it, there is no problem with an old car.<br /></span></p>
<p style="margin: 0px;"><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000; text-decoration: none;">PS: Aluminium radiator is something nobody needs in a classic car as it improves nothing. Just a useless gimmick.</span></p>
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<p style="margin: 0px;"><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000; text-decoration: none;">Josef Eckert</span></p>
<p style="margin: 0px;"><span style="font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000; text-decoration: none;">Königswinter/Germany</span></p>
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<p style="margin: 0px;">-----Original-Nachricht-----</p>
<p style="margin: 0px;">Betreff: [Healeys] alum radiator swap</p>
<p style="margin: 0px;">Datum: 2019-06-02T00:21:42+0200</p>
<p style="margin: 0px;">Von: "i erbs" <a class="moz-txt-link-rfc2396E" href="mailto:eyera3000@gmail.com"><eyera3000@gmail.com></a></p>
<p style="margin: 0px;">An: "Ahealey help" <a class="moz-txt-link-rfc2396E" href="mailto:healeys@autox.team.net"><healeys@autox.team.net></a></p>
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<div class="gmail-_1mf gmail-_1mj" style="direction: ltr; font-family: inherit;"><span style="font-family: inherit;"><span style="font-family: inherit;">Aluminum radiator swap update:</span></span></div>
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<div class="gmail-_1mf gmail-_1mj" style="direction: ltr; font-family: inherit;"><span style="font-family: inherit;"><span style="font-family: inherit;">Got my old oem unit out. Removed my nice newish metal flex fan. spliced wires onto the electric fan for easy connect/disconnect and then went to double-check the new radiator will work after and initial trial fit. What I found: OEM radiator is 1/2" wider and the aluminum radiator does not have tapped holes, so nuts will be needed to attach to my car. I am outside of the return window.</span></span></div>
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<div class="gmail-_1mf gmail-_1mj" style="direction: ltr; font-family: inherit;"><span style="font-family: inherit;"><span style="font-family: inherit;">So it looks like I will be getting my OEM Radiator flow tested and tanked.</span></span></div>
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<div class="gmail-_1mf gmail-_1mj" style="direction: ltr; font-family: inherit;"><span style="font-family: inherit;"><span style="font-family: inherit;">Will reinstall my flex fan</span></span></div>
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<div class="gmail-_1mf gmail-_1mj" style="direction: ltr; font-family: inherit;"><span style="font-family: inherit;"><span style="font-family: inherit;">refill with coolant/water</span></span></div>
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<div class="gmail-_1mf gmail-_1mj" style="direction: ltr; font-family: inherit;"><span style="font-family: inherit;"><span style="font-family: inherit;">have installed a new sleeved thermostat to replace the non-sleeved unit.</span></span></div>
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<div class="gmail-_1mf gmail-_1mj" style="direction: ltr; font-family: inherit;"><span style="font-family: inherit;"><span style="font-family: inherit;">I can make some shims for the new radiator, but cutting threads in the holes will most likely result in the holes being to big for the bolts.</span></span></div>
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<div class="gmail-_1mf gmail-_1mj" style="direction: ltr; font-family: inherit;"><span style="font-family: inherit;"><span style="font-family: inherit;">Fun with old cars</span></span></div>
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<div class="gmail-_1mf gmail-_1mj" style="direction: ltr; font-family: inherit;"><span style="font-family: inherit;"><span style="font-family: inherit;">Registered for a car show on June 8th....</span></span></div>
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<div dir="ltr">Ira Erbs
<div>Portland,OR</div>
<div><span style="font-family: '"> _______ _______</span><br style="font-family: '" /><span style="font-family: '"> (______ \____1959 BN4____/ _______)</span><br style="font-family: '" /><span style="font-family: '"> (_________________________)</span></div>
<div> BT7 engine and disk brakes</div>
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<div>1967 MGB <img src="http://www.britishcarspecialists.com/assets/images/MG_emblem.jpg" alt="MG" /></div>
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<div><span style="color: #333333; font-family: " helvetica neue",helvetica,arial,sans-serif;font-size: 14px;">A racing car is an animal with a thousand adjustments. Mario Andretti</span></div>
<div>Please excuse random auto corrects and misspelled words</div>
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